The site is still there and still being updated! The oldest example is now https://www.chasms.com/winxp/desktop.htm#
So often I've had a frustrating conversation like "Okay, do you see something that says 'wifi' or 'ethernet'? Hm, ok, no go back.. is there another button that says 'Network' or 'Adapter settings' or something like that on the screen?".
I like that Lenovo has this resource too (and exposes it publicly), and really every manufacturer should, but I honestly can't think of a time I've ever had to remotely fix a system by changing something in BIOS. It's pretty rare to change a setting there in the first place, aside from when you're doing the initial build or major hardware changes. If you were providing remote support to the people doing the hardware changes, though, this would be invaluable.